gledhill TORRENT DIRECT Design, Installation & Servicing Instructions page 33

S3
IH-2
pumping
station
IH-1
S2
S1 : Solar flow temperature sensor
S3 : Store overheat sensor/ thermostat
IH-1 : Off-peak immersion heater
Figure 4.8 Torrent RE-Solar 'OV' :
Typical Open vented 'S-Plan' Central heating, Open vented under floor heating, and solar heating system
1 : System pump
2 : Hot water zone valve
3 : Under floor heating circuit pump
4 : Central heating zone valve
5 : Automatic bypass valve
7 : Alternative energy input
e.g. wood burning stove flow
8 : Alternative energy return
e.g. wood burning stove return
9 : Immersion heater [Optional]
10 : Store control thermostat
2
Boiler
Figure 4.8 Torrent RE-Solar OV: Typical open vented 'S-plan' central heating, open vented underfl oor heating and solar heating system
HEATING SYSTEM DESIGN
Figure 4.7 Torrent Direct-Solar – Typical solar system wiring
PRV
S1
Solar panels
Expansion
vessel
Solar
P1
S2 : Solar zone store temperature sensor
P1 : Solar circuit pump
IH-2 : On-Peak (boost) immersion heater
Figure 4.7 Torrent Direct-Solar: Typical solar system wiring
7
S3
9
10
5
1
S2
8
4
Page 33
Solar controller
230Vac, 50Hz
supply
S1 S2 L N E
Junction
L N
box
230Vac, 50Hz supply
From double pole
Fused isolator
PRV
230V AC
supply
Solar
controller
Mixing
valve
To hot taps
Expansion
vessel
Cold mains
3
Under-floor heating
(Open vented)
Central heating (Sealed circuit(
Pump
L N E
E L N E SL
Overheat
NC
C
E
thermostat
(S3)
S1
Solar panels
Solar pumping
station